Federal prosecutors have added another charge to the indictment against a once-powerful New York state senator already accused of embezzlement.

They say the new count against Sen. John Sampson involves a liquor store where he had a secret ownership stake.

According to court documents, the Brooklyn Democrat was recorded asking a member of his staff to intervene with state officials to arrange past due sales tax payments and try to reduce the amount owed. He's now accused of lying to the FBI when he denied making the request.

Sampson was indicted in May on charges that include embezzling $440,000 when he was a court-appointed referee watching over escrow accounts for sales of foreclosed properties.

He's also accused of funneling funds into his failed campaign for Brooklyn district attorney.

Sampson has pleaded not guilty. His office had no comment Monday on the latest charge.